Matheson Ormsby Prentice, the leading Irish law firm, has announced the appointment of a new tax partner.

Mark O’Sullivan has been appointed as a partner in the Tax Department and as head of Matheson Ormsby Prentice’s US offices in New York and Palo Alto, California.

Mark advises on all aspects of corporate taxation. His primary focus is advising overseas clients establishing operations and doing business in Ireland and advising on the tax aspects of inward investment and structuring. Mark also advises extensively on cross-border reorganisations and financing transactions with a particular focus on structured finance and securitisation transactions.